/******************************************************************************
 *
 * Copyright (c) 1998,99 by Mindbright Technology AB, Stockholm, Sweden.
 *                 www.mindbright.se, info@mindbright.se
 *
 *****************************************************************************
 * $Author: marcus $
 * $Date: 2001/10/10 09:27:41 $
 * $Name:  $
 *****************************************************************************/
/*
 * !!! Author's comment: The contents of this file is heavily based
 * upon Tatu Ylonen's c-code (from the ssh1.2.26 package). That code
 * in its turn (as stated) is based upon Eric Young's libdes-3.06. The
 * original code is hence nowadays under a stricter license than
 * stated in the ssh1.2.26 package so you might want to look into Eric
 * Young's recent copyright-notice (which is enclosed below for
 * correctness).
 */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */
package BLK.System.Utils.Crypto;

public final class DES extends Cipher {

  protected int[] key_schedule = new int[32];
  protected int   IV0 = 0;
  protected int   IV1 = 0;

  public synchronized void encrypt(byte[] src, int srcOff, byte[] dest, int destOff, int len) {
    int[]  out = new int[2];
    int iv0 = IV0;
    int iv1 = IV1;
    int end = srcOff + len;

    for(int si = srcOff, di = destOff; si < end; si += 8, di += 8) {
      iv0 ^= ((src[si] & 0xff) | ((src[si + 1] & 0xff) << 8) |
	      ((src[si + 2] & 0xff) << 16) | ((src[si + 3] & 0xff) << 24));
      iv1 ^= ((src[si + 4] & 0xff) | ((src[si + 5] & 0xff) << 8) |
	      ((src[si + 6] & 0xff) << 16) | ((src[si + 7] & 0xff) << 24));
      encrypt(iv0, iv1, out);
      iv0 = out[0];
      iv1 = out[1];
      dest[di]   = (byte)( iv0         & 0xff);
      dest[di+1] = (byte)((iv0 >>> 8 ) & 0xff);
      dest[di+2] = (byte)((iv0 >>> 16) & 0xff);
      dest[di+3] = (byte)((iv0 >>> 24) & 0xff);
      dest[di+4] = (byte)( iv1         & 0xff);
      dest[di+5] = (byte)((iv1 >>> 8 ) & 0xff);
      dest[di+6] = (byte)((iv1 >>> 16) & 0xff);
      dest[di+7] = (byte)((iv1 >>> 24) & 0xff);
    }
    IV0 = iv0;
    IV1 = iv1;
  }

  public synchronized void decrypt(byte[] src, int srcOff, byte[] dest, int destOff, int len) {
    int[]  out = new int[2];
    int iv0 = IV0;
    int iv1 = IV1;
    int d0;
    int d1;
    int end = srcOff + len;

    for(int si = srcOff, di = destOff; si < end; si += 8, di += 8) {
      d0 = ((src[si] & 0xff) | ((src[si + 1] & 0xff) << 8) |
	    ((src[si + 2] & 0xff) << 16) | ((src[si + 3] & 0xff) << 24));
      d1 = ((src[si + 4] & 0xff) | ((src[si + 5] & 0xff) << 8) | 
	    ((src[si + 6] & 0xff) << 16) | ((src[si + 7] & 0xff) << 24));
      decrypt(d0, d1, out);
      iv0 ^= out[0];
      iv1 ^= out[1];
      dest[di]   = (byte)( iv0         & 0xff);
      dest[di+1] = (byte)((iv0 >>> 8 ) & 0xff);
      dest[di+2] = (byte)((iv0 >>> 16) & 0xff);
      dest[di+3] = (byte)((iv0 >>> 24) & 0xff);
      dest[di+4] = (byte)( iv1         & 0xff);
      dest[di+5] = (byte)((iv1 >>> 8 ) & 0xff);
      dest[di+6] = (byte)((iv1 >>> 16) & 0xff);
      dest[di+7] = (byte)((iv1 >>> 24) & 0xff);
      iv0 = d0;
      iv1 = d1;
    }
    IV0 = iv0;
    IV1 = iv1;
  }

  public void setKey(byte[] key) {
    int i, c, d, t, s, shifts;

    c = ((key[0] & 0xff) | ((key[1] & 0xff) << 8) |
	 ((key[2] & 0xff) << 16) | ((key[3] & 0xff) << 24));
    d = ((key[4] & 0xff) | ((key[5] & 0xff) << 8) |
	 ((key[6] & 0xff) << 16) | ((key[7] & 0xff) << 24));

    t  = ((d >>> 4) ^ c)  & 0x0f0f0f0f;
    c ^= t;
    d ^= t << 4;
    t = (((c << (16 - (-2))) ^ c) & 0xcccc0000);
    c = c ^ t ^ (t >>> (16 - (-2)));
    t = (((d << (16 - (-2))) ^ d) & 0xcccc0000);
    d = d ^ t ^ (t >>> (16 - (-2)));
    t  = ((d >>> 1) ^ c)  & 0x55555555;
    c ^= t;
    d ^= t << 1;
    t  = ((c >>> 8) ^ d)  & 0x00ff00ff;
    d ^= t;
    c ^= t << 8;
    t  = ((d >>> 1) ^ c)  & 0x55555555;
    c ^= t;
    d ^= t << 1;

    d  = ((d & 0xff) << 16) | (d & 0xff00) |
      ((d >>> 16) & 0xff) | ((c >>> 4) & 0xf000000);
    c &= 0x0fffffff;
    shifts = 0x7efc;

    for(i = 0; i < 16; i++) {
      if((shifts & 1) != 0) {
	c = ((c >>> 2) | (c << 26));
	d = ((d >>> 2) | (d << 26));
      } else {
	c = ((c >>> 1) | (c << 27));
	d = ((d >>> 1) | (d << 27));
      }
      shifts >>>= 1;
      c &= 0x0fffffff;
      d &= 0x0fffffff;

      s = des_skb[0][ (c) & 0x3f] |
	des_skb[1][((c >>> 6 ) & 0x03)|((c >>> 7 ) & 0x3c)] |
	des_skb[2][((c >>> 13) & 0x0f)|((c >>> 14) & 0x30)] |
	des_skb[3][((c >>> 20) & 0x01)|((c >>> 21) & 0x06) | ((c >>> 22) & 0x38)];

      t = des_skb[4][ (d) & 0x3f] |
	des_skb[5][((d >>> 7 ) & 0x03) | ((d >>> 8 ) & 0x3c)] |
	des_skb[6][ (d >>> 15) & 0x3f                ] |
	des_skb[7][((d >>> 21) & 0x0f) | ((d >>> 22) & 0x30)];

      key_schedule[i * 2]       = ((t << 16) | (s & 0xffff));
      s                         = ((s >>> 16) | (t & 0xffff0000));
      key_schedule[(i * 2) + 1] =  (s << 4)  | (s >>> 28);
    }
  }

  public void encrypt(int l, int r, int[] out) {
    int t = 0, u = 0, i;

    t  = ((r >>> 4) ^ l)  & 0x0f0f0f0f;
    l ^= t;
    r ^= t << 4;
    t  = ((l >>> 16) ^ r) & 0x0000ffff;
    r ^= t;
    l ^= t << 16;
    t  = ((r >>> 2) ^ l)  & 0x33333333;
    l ^= t;
    r ^= t << 2;
    t  = ((l >>> 8) ^ r)  & 0x00ff00ff;
    r ^= t;
    l ^= t << 8;
    t  = ((r >>> 1) ^ l)  & 0x55555555;
    l ^= t;
    r ^= t << 1;

    t = (r << 1) | (r >>> 31);
    r = (l << 1) | (l >>> 31);
    l = t;

    for (i = 0; i < 32; i += 4) {
      u = r ^ key_schedule[i    ];
      t = r ^ key_schedule[i + 1];
      t = ((t >>> 4) + (t << 28));
      l ^=
	(des_SPtrans[1][(t       ) & 0x3f] | des_SPtrans[3][(t >>> 8 ) & 0x3f] |
	 des_SPtrans[5][(t >>> 16) & 0x3f] | des_SPtrans[7][(t >>> 24) & 0x3f] |
	 des_SPtrans[0][(u       ) & 0x3f] | des_SPtrans[2][(u >>> 8 ) & 0x3f] |
	 des_SPtrans[4][(u >>> 16) & 0x3f] | des_SPtrans[6][(u >>> 24) & 0x3f]);

      u = l ^ key_schedule[i + 2];
      t = l ^ key_schedule[i + 3];
      t = ((t >>> 4) + (t << 28));
      r ^=
	(des_SPtrans[1][(t       ) & 0x3f] | des_SPtrans[3][(t >>> 8 ) & 0x3f] |
	 des_SPtrans[5][(t >>> 16) & 0x3f] | des_SPtrans[7][(t >>> 24) & 0x3f] |
	 des_SPtrans[0][(u       ) & 0x3f] | des_SPtrans[2][(u >>> 8 ) & 0x3f] |
	 des_SPtrans[4][(u >>> 16) & 0x3f] | des_SPtrans[6][(u >>> 24) & 0x3f]);
    }

    l = (l >>> 1) | (l << 31);
    r = (r >>> 1) | (r << 31);

    t  = ((r >>> 1) ^ l)  & 0x55555555;
    l ^= t;
    r ^= t << 1;
    t  = ((l >>> 8) ^ r)  & 0x00ff00ff;
    r ^= t;
    l ^= t << 8;
    t  = ((r >>> 2) ^ l)  & 0x33333333;
    l ^= t;
    r ^= t << 2;
    t  = ((l >>> 16) ^ r) & 0x0000ffff;
    r ^= t;
    l ^= t << 16;
    t  = ((r >>> 4) ^ l)  & 0x0f0f0f0f;
    l ^= t;
    r ^= t << 4;

    out[0] = l;
    out[1] = r;
  }

  public void decrypt(int l, int r, int[] out) {
    int t, u, i;

    t  = ((r >>> 4) ^ l)  & 0x0f0f0f0f;
    l ^= t;
    r ^= t << 4;
    t  = ((l >>> 16) ^ r) & 0x0000ffff;
    r ^= t;
    l ^= t << 16;
    t  = ((r >>> 2) ^ l)  & 0x33333333;
    l ^= t;
    r ^= t << 2;
    t  = ((l >>> 8) ^ r)  & 0x00ff00ff;
    r ^= t;
    l ^= t << 8;
    t  = ((r >>> 1) ^ l)  & 0x55555555;
    l ^= t;
    r ^= t << 1;

    t = (r << 1) | (r >>> 31);
    r = (l << 1) | (l >>> 31);
    l = t;

    for (i = 30; i > 0; i -= 4) {
      u = r ^ key_schedule[i    ];
      t = r ^ key_schedule[i + 1];
      t = ((t >>> 4) + (t << 28));
      l ^=
	(des_SPtrans[1][(t       ) & 0x3f] | des_SPtrans[3][(t >>> 8 ) & 0x3f] |
	 des_SPtrans[5][(t >>> 16) & 0x3f] | des_SPtrans[7][(t >>> 24) & 0x3f] |
	 des_SPtrans[0][(u       ) & 0x3f] | des_SPtrans[2][(u >>> 8 ) & 0x3f] |
	 des_SPtrans[4][(u >>> 16) & 0x3f] | des_SPtrans[6][(u >>> 24) & 0x3f]);

      u = l ^ key_schedule[i - 2];
      t = l ^ key_schedule[i - 1];
      t = ((t >>> 4) + (t << 28));
      r ^=
	(des_SPtrans[1][(t       ) & 0x3f] | des_SPtrans[3][(t >>> 8 ) & 0x3f] |
	 des_SPtrans[5][(t >>> 16) & 0x3f] | des_SPtrans[7][(t >>> 24) & 0x3f] |
	 des_SPtrans[0][(u       ) & 0x3f] | des_SPtrans[2][(u >>> 8 ) & 0x3f] |
	 des_SPtrans[4][(u >>> 16) & 0x3f] | des_SPtrans[6][(u >>> 24) & 0x3f]);
    }

    l = (l >>> 1) | (l << 31);
    r = (r >>> 1) | (r << 31);

    t  = ((r >>> 1) ^ l)  & 0x55555555;
    l ^= t;
    r ^= t << 1;
    t  = ((l >>> 8) ^ r)  & 0x00ff00ff;
    r ^= t;
    l ^= t << 8;
    t  = ((r >>> 2) ^ l)  & 0x33333333;
    l ^= t;
    r ^= t << 2;
    t  = ((l >>> 16) ^ r) & 0x0000ffff;
    r ^= t;
    l ^= t << 16;
    t  = ((r >>> 4) ^ l)  & 0x0f0f0f0f;
    l ^= t;
    r ^= t << 4;

    out[0] = l;
    out[1] = r;
  }
  
  /* Table for key generation.  This used to be in sk.h.
   * Copyright (C) 1993 Eric Young - see README for more details
   */
  final static int des_skb[][] = {
    /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
    { 0x00000000,0x00000010,0x20000000,0x20000010,
      0x00010000,0x00010010,0x20010000,0x20010010,
      0x00000800,0x00000810,0x20000800,0x20000810,
      0x00010800,0x00010810,0x20010800,0x20010810,
      0x00000020,0x00000030,0x20000020,0x20000030,
      0x00010020,0x00010030,0x20010020,0x20010030,
      0x00000820,0x00000830,0x20000820,0x20000830,
      0x00010820,0x00010830,0x20010820,0x20010830,
      0x00080000,0x00080010,0x20080000,0x20080010,
      0x00090000,0x00090010,0x20090000,0x20090010,
      0x00080800,0x00080810,0x20080800,0x20080810,
      0x00090800,0x00090810,0x20090800,0x20090810,
      0x00080020,0x00080030,0x20080020,0x20080030,
      0x00090020,0x00090030,0x20090020,0x20090030,
      0x00080820,0x00080830,0x20080820,0x20080830,
      0x00090820,0x00090830,0x20090820,0x20090830 },
    /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
    { 0x00000000,0x02000000,0x00002000,0x02002000,
      0x00200000,0x02200000,0x00202000,0x02202000,
      0x00000004,0x02000004,0x00002004,0x02002004,
      0x00200004,0x02200004,0x00202004,0x02202004,
      0x00000400,0x02000400,0x00002400,0x02002400,
      0x00200400,0x02200400,0x00202400,0x02202400,
      0x00000404,0x02000404,0x00002404,0x02002404,
      0x00200404,0x02200404,0x00202404,0x02202404,
      0x10000000,0x12000000,0x10002000,0x12002000,
      0x10200000,0x12200000,0x10202000,0x12202000,
      0x10000004,0x12000004,0x10002004,0x12002004,
      0x10200004,0x12200004,0x10202004,0x12202004,
      0x10000400,0x12000400,0x10002400,0x12002400,
      0x10200400,0x12200400,0x10202400,0x12202400,
      0x10000404,0x12000404,0x10002404,0x12002404,
      0x10200404,0x12200404,0x10202404,0x12202404 },
    /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
    { 0x00000000,0x00000001,0x00040000,0x00040001,
      0x01000000,0x01000001,0x01040000,0x01040001,
      0x00000002,0x00000003,0x00040002,0x00040003,
      0x01000002,0x01000003,0x01040002,0x01040003,
      0x00000200,0x00000201,0x00040200,0x00040201,
      0x01000200,0x01000201,0x01040200,0x01040201,
      0x00000202,0x00000203,0x00040202,0x00040203,
      0x01000202,0x01000203,0x01040202,0x01040203,
      0x08000000,0x08000001,0x08040000,0x08040001,
      0x09000000,0x09000001,0x09040000,0x09040001,
      0x08000002,0x08000003,0x08040002,0x08040003,
      0x09000002,0x09000003,0x09040002,0x09040003,
      0x08000200,0x08000201,0x08040200,0x08040201,
      0x09000200,0x09000201,0x09040200,0x09040201,
      0x08000202,0x08000203,0x08040202,0x08040203,
      0x09000202,0x09000203,0x09040202,0x09040203 },
    /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
    { 0x00000000,0x00100000,0x00000100,0x00100100,
      0x00000008,0x00100008,0x00000108,0x00100108,
      0x00001000,0x00101000,0x00001100,0x00101100,
      0x00001008,0x00101008,0x00001108,0x00101108,
      0x04000000,0x04100000,0x04000100,0x04100100,
      0x04000008,0x04100008,0x04000108,0x04100108,
      0x04001000,0x04101000,0x04001100,0x04101100,
      0x04001008,0x04101008,0x04001108,0x04101108,
      0x00020000,0x00120000,0x00020100,0x00120100,
      0x00020008,0x00120008,0x00020108,0x00120108,
      0x00021000,0x00121000,0x00021100,0x00121100,
      0x00021008,0x00121008,0x00021108,0x00121108,
      0x04020000,0x04120000,0x04020100,0x04120100,
      0x04020008,0x04120008,0x04020108,0x04120108,
      0x04021000,0x04121000,0x04021100,0x04121100,
      0x04021008,0x04121008,0x04021108,0x04121108 },
    /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
    { 0x00000000,0x10000000,0x00010000,0x10010000,
      0x00000004,0x10000004,0x00010004,0x10010004,
      0x20000000,0x30000000,0x20010000,0x30010000,
      0x20000004,0x30000004,0x20010004,0x30010004,
      0x00100000,0x10100000,0x00110000,0x10110000,
      0x00100004,0x10100004,0x00110004,0x10110004,
      0x20100000,0x30100000,0x20110000,0x30110000,
      0x20100004,0x30100004,0x20110004,0x30110004,
      0x00001000,0x10001000,0x00011000,0x10011000,
      0x00001004,0x10001004,0x00011004,0x10011004,
      0x20001000,0x30001000,0x20011000,0x30011000,
      0x20001004,0x30001004,0x20011004,0x30011004,
      0x00101000,0x10101000,0x00111000,0x10111000,
      0x00101004,0x10101004,0x00111004,0x10111004,
      0x20101000,0x30101000,0x20111000,0x30111000,
      0x20101004,0x30101004,0x20111004,0x30111004 },
    /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
    { 0x00000000,0x08000000,0x00000008,0x08000008,
      0x00000400,0x08000400,0x00000408,0x08000408,
      0x00020000,0x08020000,0x00020008,0x08020008,
      0x00020400,0x08020400,0x00020408,0x08020408,
      0x00000001,0x08000001,0x00000009,0x08000009,
      0x00000401,0x08000401,0x00000409,0x08000409,
      0x00020001,0x08020001,0x00020009,0x08020009,
      0x00020401,0x08020401,0x00020409,0x08020409,
      0x02000000,0x0A000000,0x02000008,0x0A000008,
      0x02000400,0x0A000400,0x02000408,0x0A000408,
      0x02020000,0x0A020000,0x02020008,0x0A020008,
      0x02020400,0x0A020400,0x02020408,0x0A020408,
      0x02000001,0x0A000001,0x02000009,0x0A000009,
      0x02000401,0x0A000401,0x02000409,0x0A000409,
      0x02020001,0x0A020001,0x02020009,0x0A020009,
      0x02020401,0x0A020401,0x02020409,0x0A020409 },
    /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
    { 0x00000000,0x00000100,0x00080000,0x00080100,
      0x01000000,0x01000100,0x01080000,0x01080100,
      0x00000010,0x00000110,0x00080010,0x00080110,
      0x01000010,0x01000110,0x01080010,0x01080110,
      0x00200000,0x00200100,0x00280000,0x00280100,
      0x01200000,0x01200100,0x01280000,0x01280100,
      0x00200010,0x00200110,0x00280010,0x00280110,
      0x01200010,0x01200110,0x01280010,0x01280110,
      0x00000200,0x00000300,0x00080200,0x00080300,
      0x01000200,0x01000300,0x01080200,0x01080300,
      0x00000210,0x00000310,0x00080210,0x00080310,
      0x01000210,0x01000310,0x01080210,0x01080310,
      0x00200200,0x00200300,0x00280200,0x00280300,
      0x01200200,0x01200300,0x01280200,0x01280300,
      0x00200210,0x00200310,0x00280210,0x00280310,
      0x01200210,0x01200310,0x01280210,0x01280310 },
    /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
    { 0x00000000,0x04000000,0x00040000,0x04040000,
      0x00000002,0x04000002,0x00040002,0x04040002,
      0x00002000,0x04002000,0x00042000,0x04042000,
      0x00002002,0x04002002,0x00042002,0x04042002,
      0x00000020,0x04000020,0x00040020,0x04040020,
      0x00000022,0x04000022,0x00040022,0x04040022,
      0x00002020,0x04002020,0x00042020,0x04042020,
      0x00002022,0x04002022,0x00042022,0x04042022,
      0x00000800,0x04000800,0x00040800,0x04040800,
      0x00000802,0x04000802,0x00040802,0x04040802,
      0x00002800,0x04002800,0x00042800,0x04042800,
      0x00002802,0x04002802,0x00042802,0x04042802,
      0x00000820,0x04000820,0x00040820,0x04040820,
      0x00000822,0x04000822,0x00040822,0x04040822,
      0x00002820,0x04002820,0x00042820,0x04042820,
      0x00002822,0x04002822,0x00042822,0x04042822 }
  };

  /* Tables used for executing des.  This used to be in spr.h.
   * Copyright (C) 1993 Eric Young - see README for more details
   */
  final static int des_SPtrans[][] = {
    /* nibble 0 */
    { 0x00820200, 0x00020000, 0x80800000, 0x80820200,
      0x00800000, 0x80020200, 0x80020000, 0x80800000,
      0x80020200, 0x00820200, 0x00820000, 0x80000200,
      0x80800200, 0x00800000, 0x00000000, 0x80020000,
      0x00020000, 0x80000000, 0x00800200, 0x00020200,
      0x80820200, 0x00820000, 0x80000200, 0x00800200,
      0x80000000, 0x00000200, 0x00020200, 0x80820000,
      0x00000200, 0x80800200, 0x80820000, 0x00000000,
      0x00000000, 0x80820200, 0x00800200, 0x80020000,
      0x00820200, 0x00020000, 0x80000200, 0x00800200,
      0x80820000, 0x00000200, 0x00020200, 0x80800000,
      0x80020200, 0x80000000, 0x80800000, 0x00820000,
      0x80820200, 0x00020200, 0x00820000, 0x80800200,
      0x00800000, 0x80000200, 0x80020000, 0x00000000,
      0x00020000, 0x00800000, 0x80800200, 0x00820200,
      0x80000000, 0x80820000, 0x00000200, 0x80020200 },

    /* nibble 1 */
    { 0x10042004, 0x00000000, 0x00042000, 0x10040000,
      0x10000004, 0x00002004, 0x10002000, 0x00042000,
      0x00002000, 0x10040004, 0x00000004, 0x10002000,
      0x00040004, 0x10042000, 0x10040000, 0x00000004,
      0x00040000, 0x10002004, 0x10040004, 0x00002000,
      0x00042004, 0x10000000, 0x00000000, 0x00040004,
      0x10002004, 0x00042004, 0x10042000, 0x10000004,
      0x10000000, 0x00040000, 0x00002004, 0x10042004,
      0x00040004, 0x10042000, 0x10002000, 0x00042004,
      0x10042004, 0x00040004, 0x10000004, 0x00000000,
      0x10000000, 0x00002004, 0x00040000, 0x10040004,
      0x00002000, 0x10000000, 0x00042004, 0x10002004,
      0x10042000, 0x00002000, 0x00000000, 0x10000004,
      0x00000004, 0x10042004, 0x00042000, 0x10040000,
      0x10040004, 0x00040000, 0x00002004, 0x10002000,
      0x10002004, 0x00000004, 0x10040000, 0x00042000 },

    /* nibble 2 */
    { 0x41000000, 0x01010040, 0x00000040, 0x41000040,
      0x40010000, 0x01000000, 0x41000040, 0x00010040,
      0x01000040, 0x00010000, 0x01010000, 0x40000000,
      0x41010040, 0x40000040, 0x40000000, 0x41010000,
      0x00000000, 0x40010000, 0x01010040, 0x00000040,
      0x40000040, 0x41010040, 0x00010000, 0x41000000,
      0x41010000, 0x01000040, 0x40010040, 0x01010000,
      0x00010040, 0x00000000, 0x01000000, 0x40010040,
      0x01010040, 0x00000040, 0x40000000, 0x00010000,
      0x40000040, 0x40010000, 0x01010000, 0x41000040,
      0x00000000, 0x01010040, 0x00010040, 0x41010000,
      0x40010000, 0x01000000, 0x41010040, 0x40000000,
      0x40010040, 0x41000000, 0x01000000, 0x41010040,
      0x00010000, 0x01000040, 0x41000040, 0x00010040,
      0x01000040, 0x00000000, 0x41010000, 0x40000040,
      0x41000000, 0x40010040, 0x00000040, 0x01010000 },

    /* nibble 3 */
    { 0x00100402, 0x04000400, 0x00000002, 0x04100402,
      0x00000000, 0x04100000, 0x04000402, 0x00100002,
      0x04100400, 0x04000002, 0x04000000, 0x00000402,
      0x04000002, 0x00100402, 0x00100000, 0x04000000,
      0x04100002, 0x00100400, 0x00000400, 0x00000002,
      0x00100400, 0x04000402, 0x04100000, 0x00000400,
      0x00000402, 0x00000000, 0x00100002, 0x04100400,
      0x04000400, 0x04100002, 0x04100402, 0x00100000,
      0x04100002, 0x00000402, 0x00100000, 0x04000002,
      0x00100400, 0x04000400, 0x00000002, 0x04100000,
      0x04000402, 0x00000000, 0x00000400, 0x00100002,
      0x00000000, 0x04100002, 0x04100400, 0x00000400,
      0x04000000, 0x04100402, 0x00100402, 0x00100000,
      0x04100402, 0x00000002, 0x04000400, 0x00100402,
      0x00100002, 0x00100400, 0x04100000, 0x04000402,
      0x00000402, 0x04000000, 0x04000002, 0x04100400 },

    /* nibble 4 */
    { 0x02000000, 0x00004000, 0x00000100, 0x02004108,
      0x02004008, 0x02000100, 0x00004108, 0x02004000,
      0x00004000, 0x00000008, 0x02000008, 0x00004100,
      0x02000108, 0x02004008, 0x02004100, 0x00000000,
      0x00004100, 0x02000000, 0x00004008, 0x00000108,
      0x02000100, 0x00004108, 0x00000000, 0x02000008,
      0x00000008, 0x02000108, 0x02004108, 0x00004008,
      0x02004000, 0x00000100, 0x00000108, 0x02004100,
      0x02004100, 0x02000108, 0x00004008, 0x02004000,
      0x00004000, 0x00000008, 0x02000008, 0x02000100,
      0x02000000, 0x00004100, 0x02004108, 0x00000000,
      0x00004108, 0x02000000, 0x00000100, 0x00004008,
      0x02000108, 0x00000100, 0x00000000, 0x02004108,
      0x02004008, 0x02004100, 0x00000108, 0x00004000,
      0x00004100, 0x02004008, 0x02000100, 0x00000108,
      0x00000008, 0x00004108, 0x02004000, 0x02000008 },

    /* nibble 5 */
    { 0x20000010, 0x00080010, 0x00000000, 0x20080800,
      0x00080010, 0x00000800, 0x20000810, 0x00080000,
      0x00000810, 0x20080810, 0x00080800, 0x20000000,
      0x20000800, 0x20000010, 0x20080000, 0x00080810,
      0x00080000, 0x20000810, 0x20080010, 0x00000000,
      0x00000800, 0x00000010, 0x20080800, 0x20080010,
      0x20080810, 0x20080000, 0x20000000, 0x00000810,
      0x00000010, 0x00080800, 0x00080810, 0x20000800,
      0x00000810, 0x20000000, 0x20000800, 0x00080810,
      0x20080800, 0x00080010, 0x00000000, 0x20000800,
      0x20000000, 0x00000800, 0x20080010, 0x00080000,
      0x00080010, 0x20080810, 0x00080800, 0x00000010,
      0x20080810, 0x00080800, 0x00080000, 0x20000810,
      0x20000010, 0x20080000, 0x00080810, 0x00000000,
      0x00000800, 0x20000010, 0x20000810, 0x20080800,
      0x20080000, 0x00000810, 0x00000010, 0x20080010 },

    /* nibble 6 */
    { 0x00001000, 0x00000080, 0x00400080, 0x00400001,
      0x00401081, 0x00001001, 0x00001080, 0x00000000,
      0x00400000, 0x00400081, 0x00000081, 0x00401000,
      0x00000001, 0x00401080, 0x00401000, 0x00000081,
      0x00400081, 0x00001000, 0x00001001, 0x00401081,
      0x00000000, 0x00400080, 0x00400001, 0x00001080,
      0x00401001, 0x00001081, 0x00401080, 0x00000001,
      0x00001081, 0x00401001, 0x00000080, 0x00400000,
      0x00001081, 0x00401000, 0x00401001, 0x00000081,
      0x00001000, 0x00000080, 0x00400000, 0x00401001,
      0x00400081, 0x00001081, 0x00001080, 0x00000000,
      0x00000080, 0x00400001, 0x00000001, 0x00400080,
      0x00000000, 0x00400081, 0x00400080, 0x00001080,
      0x00000081, 0x00001000, 0x00401081, 0x00400000,
      0x00401080, 0x00000001, 0x00001001, 0x00401081,
      0x00400001, 0x00401080, 0x00401000, 0x00001001 },

    /* nibble 7 */
    { 0x08200020, 0x08208000, 0x00008020, 0x00000000,
      0x08008000, 0x00200020, 0x08200000, 0x08208020,
      0x00000020, 0x08000000, 0x00208000, 0x00008020,
      0x00208020, 0x08008020, 0x08000020, 0x08200000,
      0x00008000, 0x00208020, 0x00200020, 0x08008000,
      0x08208020, 0x08000020, 0x00000000, 0x00208000,
      0x08000000, 0x00200000, 0x08008020, 0x08200020,
      0x00200000, 0x00008000, 0x08208000, 0x00000020,
      0x00200000, 0x00008000, 0x08000020, 0x08208020,
      0x00008020, 0x08000000, 0x00000000, 0x00208000,
      0x08200020, 0x08008020, 0x08008000, 0x00200020,
      0x08208000, 0x00000020, 0x00200020, 0x08008000,
      0x08208020, 0x00200000, 0x08200000, 0x08000020,
      0x00208000, 0x00008020, 0x08008020, 0x08200000,
      0x00000020, 0x08208000, 0x00208020, 0x00000000,
      0x08000000, 0x08200020, 0x00008000, 0x00208020 }
  };

}
